Regarding K9

[TrueBlue]

We use K9 on two pcs, one with vista, one with an ooooooold windows os. We rarely have problems with K9 blocking random things, haven't ever had to uninstal it. The old stand by of rebooting has worked every time thus far (twice on vista, once on the other) of fixing it. A bit annoying having to power down and up, but less annoying than more drastic fixes, for me anyway :)